OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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starfish
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clams
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sand dollars
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basket stars
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Detailed explanation-1: -The phylum of mollusks includes more than 50, 000 known species, found in freshwater and marine environments as well as on land. Snails are some of the best known terrestrial members of a group that also includes clams and mussels. Echinoderms, in contrast, live exclusively in marine environments.
Detailed explanation-2: -Final answer: Chiton does not belong to the phylum Echinodermata.
Detailed explanation-3: -Examples of echinoderms include sea stars, sea urchins, sea cucumbers, brittle stars, and feather stars (Fig. 3.83). Although they may appear very different, echinoderms all have two major defining characteristics that set them apart from all other animals: a water vascular system and five-sided radial symmetry.
Detailed explanation-4: -They have a star-like appearance and are spherical or elongated. They are exclusively marine animals. The organisms are spiny-skinned. They exhibit organ system level of organization. They are triploblastic and have a coelomic cavity. The skeleton is made up of calcium carbonate. More items